Johnson, D. W. (1993). Reaching out: Interpersonal effectiveness and ... (5th.ed.). Allyn and Bacon.
Cita Chicago (17th ed.)Johnson, David W. Reaching Out: Interpersonal Effectiveness and ... 5th.ed. Boston: Allyn and Bacon, 1993.
Cita MLA (9th ed.)Johnson, David W. Reaching Out: Interpersonal Effectiveness and ... 5th.ed. Allyn and Bacon, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.